Vehicle-controlled door-operating mechanism.



J. M. v nmu. VEHICLE CONTROLLED DOOR OPERATING ME m'msm.

Armcmqu FILED mm. 1915. Pate F 20, 191ml 308m 1!. manor cnosnmmnmns m;

vnnmnn-coiirnonnnn Specification of Letters Patent.

nooa-ornna'rme 1m 1 Application filed January a, 1010. smith. see; i v

To all it cont/em: 1

Be it known that I, Josarn M. MIRAU, a

citizen of the United States, residing at .Crosby,.inthe count of Crow Wing and ,State of Minnesota, ave (invented certain new and; useful Improvements in Vehicle- "Controlled Door-Operating Mechanism, ofwhich 'the following is a specification, reis had to the accompanying drawg l hisinvention relates to vehicle controlled door operating mechanism and has for its primaryobject to provide simple and'posi' tively operating means primarily "actuated,

by the vehicle to "open the door of a garage or. similar structure and subsequently permit p the door to return to itsclosed posit on.

It isanother and'more particular object of the invention toprovide a mechanism .of'the' above character including a-spring sup ort ed platform exten under the door th interiorly and exterior yet the structure, air actuated mea'ns for moving the door-t0 its 0 en position, and means'connected to the p atforin and actuatedupon a de ression hereofunder the'weight'of the ve icleto "open the supplywhereby the door op- I eratingmeansisact a It isa further general obiect of the inventio'nto' roduces. door operating mechanism of ve character, whichis exceedin 1y simple in its construction-as well as dura lo and reliable in practical operation and may be installed at a nominal cost. y With the above and other objects in view, in invention consists in the novel features oi const, ction, combination and wrangle ment of parts to be hereinafter more in y described, claimed and illustrated inthe accompanying drawings, in which, Figure 1 is a :vertical sectional view through a gem ora-like, {structure and the entrance door ereof Fig. Z'isa we, as indicat .hold the platfpl mwvvith tween one end thereof and p 19 is arranged iii t is ipe,

similar ofi'nmgdtherein for the w ch s normally closed a vertically n ovable dosr-frmsumd for r nates the vertical wall of a structureha an i passage ofvehic s,

iding movement guide channels a at the so o positevertical edges-of thd-door opening.

channels extend -l'lpward1y into the vert cal doorlivingjchannel 9. formed in the biuldmg wall abovetheidooriopeningr The concrete doc or inundation is rel 9 P5 i wimd ng equaldistancesfronithe doorxo" 6 inwardly and 01 ltwarjflly thereof.

reoss a defgressi ole 'latforni l'i I. fl gfll 8 8' fill y, i

coil spflngElQ. These sp abovetlie; imsstfytlieeoncrsee A cylin er 13 i suitably m l and 35 .1 76 therein, said pimxm in yilfl' w n ageinst, mgvemex it in one irectibfl; I, edit spnngli e within the a surrounding the piston rod' 15' extends through "a suitable'stiiiling the end of'the cylinder and,'-t d" lie cable q; other iexible element nected. This'element passesaroundgmde sheaves 17 and has itsotherentlgattachedgm I for supplying comp. e; irto onpl l'epd f the compressediir tank'withfwhicii-theiis ual garage isequi A threemayvalve of the ordma'ryqconstruction *in F g. '6 of thedmwin To'theicasingiof this va ve, an inlet'pipe leadingto of the cylinder, in connected,; and joutlet pipe P is also (onnected to theame end-of the cylinder ard to'the" valve P,

. v I designates. theexhaust pipe the horizontalsectiomtaken on the yalve casing.

The. rotary valve'meinberf is 45 line 2-2 of'Fig. 1;- a Pr g r y poem,

' Fig. 3 isa vertical section similar. to Fig.- 19", and 19? to he} Tl." 17c;

,1- illustrating the invention used in connecpipes which an connectedlo'the :vl ilv'e tionwith another t of door; ing. The rotary valve membefhasan Fig; 4 is a vertica sectional view showing '20.;fixed to. one end thereoffanda rod: p T

so an electrical o crating meansifor the-door;- pivotally, connected ,tothis arm,, ae lower Fig. 5 is a etail section taken on the line 5- -5 of Fig. 1. Fig. 6, is a detail sectional view ofthe valve. 1 f 4 Referring in detailto the drawings and 55 moreparticularly to Fig. lthereof, 5 desigend of'said rod being, connectedgto' form '11; It will be understoodfthatlthe door 1* operating mechanisms are arranged ad acent to the o posite vertical? edges of the sothut t l l at". f thetopot thedqot 7. seesi'gnaesfap re iqoy e doorwill properly I i raised or elevated by an even upward Apull at the opposite edges thereof .and the r will. not bind in the channels 8-.

Is depressed against the action of the In the operation of the device above described,when the front wheels of the vehicle move uplon the (platform 11, as the vehicle.

and the cylinder 13. In

the rod 21 downe 'valve 19 to open this position of the rotary valve member, the port 19 thereof the downward $5 the outlet pipe P immediatel vertical rod 21 connected to one ton is moved to one end registers with the supply pipe 18, and the port 19" with the cylinder. inlet pipe P,

while the port 19 is closed. Thus, the pisv of the cylinder and the cable '16 pulled to draw the door -8 upwardly above the door opening "6 and into the channel or passage 9, thus 7 rmitting the vehicle to pass through the oor 0 ening into the garage. As. soon as the ve 'cle moves of! of the platform 11, the springs 12 will return the platform to its normal position and the rod 21 then actuates the valve open communication between the cylinder 14 and the atmosphere so that in gravity movement of the door 8 to its closedposition, the air will be exhausted from the cylinder 13; The ro-- tary valve member is now dlsl liosedv in the position shown i ,Fig. 6 of t e drawings, the supplyfrom the pipe 18 bein gcut off and the from the cylinder, while the port 19 registerswith the exhaust pi P;' It is thus apparent'that the door 'wlll' be a of.

close so that cold air w' 1 enter the garage In Fig. 3 of the drawin the vertical wall 5 provide with an articu lated door of that type commonly found upon roll top desks, the door 8' being made up of a plurality of slats or sections flexib y connected together. This typeof door will be used" upon small structures and moves in the channel guides 7, the upper ends of which are curved inwardl as at 7, and secured to the sidewalls of the structure. In this view,,I have 'also'shown the arm of the bell crank lever 22, to the other arm of i which a rod'23 is pivotally connected, said at 24, in circuit 'with the supply pipe 18 port 19 being in registration with "I, therefore, reserve the gs, I have shown 'tion, what I desire to claim and plate 26 and connected to the opposite side I of the-circuit so that when theplatform is depressed switch, indicated at 28', arran "d in-the circuit so that the motor 24 may 'cut out when it is not desired fixed; One end of a flexible cable connected to the door, is attached to this drum and is adapted. to be wolmd thereon in the operationof the motor, whereby the door is elevated to its 0 11 position.

From 'the oregoing "description, taken 'in connection with the accompanying drawings, the construction and mannerof operation of the several illustrated embodiments of the invention will be clearly and fully understood. B lproviding the means pnmarily actuated y the weight of the vehicle for openin the door, the operator of the vehicle is rehevedof the necessity of descending. In cold weather the interior of the garage maybe maintained at a comfortable temperature, as the door will immediately close after the vehicle A form. The invention, with obvious structural modifications, may be readily applied to various types of garages and .similar buildings used for the stora e of motor vehicles,-and can also be read ily installed in old structures at relatively small cost.

While I' have shown and described the preferred construction and arrangement of the severalelements of the device, it will understood that the invention is susceptible of considerable modification therein and ing all such is 't'i'mate c fairly embodie within the spirit and scope of the invention as claimed.

Having thus fully described my invensecure by anges as may Letters Patent is:

The combination with a structure ha a door opening and vertical guides at the opposite sides of said opening, a door vertically slidable in said guides, of a spring supported platform extending substantially the entire width of the door beneath the same and in opposite directions therefrom, a compressed air cylinder mounted above the door when the latter is in open position, a iston to reciprocate in said cylinder, a ca le connecting one end of the piston to the upper edge of the door, a spring in the cylinder acting to move the cylinder in one direction, an air supply pipe connected to said plate 26 will contact with the plate 27 and close the circuit. A suitable rivilege of ado tv to operate the door. A driving belt 28' connects the shaft of this motor to a shaft. 29 on which a drum 30 is leaves the platby the valve is actuated when therplatform the door isv permitted to move by gravit is depressed under the wei ht of a. vehicle to its closed pozition, the piston in the cy and communication establis ed between the inder eo-acting with the spring to cushion supply pipe and the cylinder, whereby the the latter movement of the door. y 5 piston is moved to elevate the door to its In testimony whereof I,hereunto aflix my 15 open osition, said valve .being operated signature in the presence of twowitn. upon t e return of the platform to its nor- JOSEPH M. MIRAU. 'mal position to open communication be- Witnesses: tween the cylinder and the atmosphere and J. B. Hum,

exhaust the air from the cylinder, whereby W M. J. IIABEAN. 

